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We consider the problem of designing a survivable telecommunication network using facilities of a fixed capacity. Given a graph G = (V, E), the traffic demand among the nodes, and the cost of installing facilities on the edges of G, we wish to design the minimum cost network, so that under any single edge failure, the network permits the flow of all traffic using the remaining capacity. The problem...
Survivability is a critical concern in modern telecom mesh networks because the failure of a network element may cause tremendous data and revenue loss in such networks using high-capacity optical fibers employing wavelength-division multiplexing (WDM). Multipath provisioning is a key feature of next-generation SONET/SDH networks (which can be used on top of optical WDM), and they can support virtual...
Network survivability is very important due to the growth of Internet traffic and the number of services/business depending on telecommunication networks. A Shared Risk Link Group (SRLG) is the set of links in the network that share a common physical resource subject to fault(s). The fault of a given network resource implies a fault in all links in the corresponding SRLG. The concept of SRLG allows...
During the research of supplementary system for visual impairment people, it has been discovered that it is better to use ZigBee wireless technology considering the reliability, portability and flexibility. Through the independent regionally-covered Zigbee networks and the Zigbee terminal with voice prompts, clients will be able to get to the destination correctly and independently according to the...
Huge interest and demand on information superhighway have pressed various telecommunications research fronts and lead to a new form of future Internet consisting of wired and wireless segments where resource-constrained devices such as palm pilots and sensors may become integral parts of the Internet rather than access-only platforms. One of the key design problems is the security in such heterogeneous...
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